Question: Who is the inventor or discoverer of Messier 77 whose murder method is yellow fever?
Paraphrase: Who is Messier 77's inventor or discoverer whose method of killing is yellow fever?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q14017 wdt:P61 ?answer . ?answer wdt:P509 wd:Q154874}
Answer: Pierre Méchain